Improved hay-elevator



MPETERS. PMuTo-LITHUGRAFHER. WASHINGTON, D CA unfall sata" parte epm T..lARNOLD, or TROY, PENNSYLVANIA.

Letters Patent No. 93,579, dated August 10, 1869.

IMPROVED' HAY-ELEVATOR.

The Schedule referred to in these Letters Patent and making part of thesameA To all whom 'it may concer/n:

-whereby the forks, when elevated to a given height, are carried' in ahorizontal direction to any point under the beams, bythe sliding of saidcarriers along the beams, and aft-er removal of their loads' are againreturned bythe sliding back of the same.

The inconveniences heretofore attending'the use of this machine havebeen, first, the liability of the carrierto slide along the beam duringthe hoisting of the fork with its load, and secondly, the liabilityofthe fork to run downward during the backward sliding of the carrier.

My invention consists in the providing of the car- Jier'of ahay-pitcher, of this description, with a combined locking-hook and dog,whereby the carrier is locked to the beam during the raising of thefork, and whereby the weight ofthe fork is sustained during the backwardsliding of the carrier.

Referring to thc accompanying drawing- Figure l represents alongitudinal view of a haypitcher constructed according to myimprovement,

with its carrier and locking-hook represented in section;

Figure 2 represents a similar view of a portion of the same, showing themanner of applyin gthe improvemeut to a single rope and pulley; and

' Figure 3 represents a transverse section ofthe pitcher taken throughthe carrier. A

Similar letters of reference indicate corresponding parts in bothfigures.

A is the horizontal beam of a hay-pitcher, having arranged to slidethereon a carrier, B, to which is suspended and operated, by means of ablock and tackle,`

hay-fork, f. Elevation of the fork, and sliding of the carrier B areeffected by the application of power to the rope e, while the backfwa-rdsliding-of the said carrier is effected by the transferring of the powerto the rope c', substantiallyas in other hay-pitchers of this kind.'

But in addition to this, I provide the carrier B, on the under sidethereof, with a combined locking-hook and dog, a.

Said device Iconstructed of iron, hard wood, or other suitable material,and is piroted within thc carrier at a point, x, near the upper part ofthe outer edge thereof.

The outer extremity of this locking-hook and dog a, is provided with anupwardly-projecting catch, a', for engaging with a downward projectionor locking-piece, b, provided at the outer end of the main body of thebeam A, while its opposite or inner extremity is of suflcient weight tooverbalance the said hooked end or catch a', thereby to insure a readyengagement of the catch a with the projection o r locking-piece b, sothat by said engagement the carrier-B is locked to the beam, and itssliding prevented during the raising of the fork.

Then the fork is raised to av sufficient elevation, the

npperend of the pulley-block d strikes against the nnt der side of theinner extremity of the locking-hook and dog a, and unlocks the saidcatch a from'the lockingpiece b, thereby releasing the carrier B,whereupon a continued draught upon the rope e will cause the sliding ofthc carrier along the beam A, carrying with it the loaded' fork f.

After the unloading of the fork, the rope c is relaxed, and isimmediately caught between the periphery of the pulley e and the innerextremity of the combined hook. and d og'a, by the dropping oftheJatter, in such manneufthat the downward force exerted upon theweight of the fork will ten'd to jam the rope the tighter between thesaid parts, thereby eifectually preventing the descent of the fork, asillustrated bythose part-s in g. 1, represented in red outline.

Upon the transferring of the power to the cord c', the carrier B is madeto slide back to its former position, at which point the catch a ispressed downward by contact of its bevelled surface with the bevelledsnrface of the locking-piece b, thereby releasing the rope e, whereuponthe fork is allowed to descend to the point from whence it rst started,while the locking of the carrier Bis again efected by the engagement ofthe catch a and locking-piece b.

The said locking-hook and dog a is provided with an opening, o, near itscentral portion, 'for the passage of the'extremity of thecord c, in ,theattaching thereof to the under side of the carrier.

For raising light weights, or under other circulal stances, where thepulley l is not necessary, a trip ping-button, g, is attached to thecord c, above the fork, for tripping the hook (l, and unlocking` thecarrier, as illustrated in tig. y

Horizontal guide-ways, m my, composed of strips of wood, 'or othermaterial, are attached to the sides of the beams A, lengthwise thereof,and sliders, n n, composed of vshorter strips, of the same material asthe carrier B, -are secured in a horizontal manner through lthe upperpart ofthe said carrier.

` Said sliders n a are fitted to slide along the upper side of the saidguide-Ways m my, for the purposeoi Vsupporting the carrier Vn'pon thebea-m, and facilitating its sliding movement thereon.

What I claim as my invention, and desire to have secured by LettersPatent, is-

1. The locking-dog a, so constructed and connected with the carrier B,as to perform the' double purpose of retaining the carrier in positionWhile elevating the load, and of preventing the descent of the forkduring the return-motion of said carrier, substantially as specified.

2. In combination with the carrier1 having its locking-hook and dogoperating as above, the stationary piece b, whereby the carrier isretained and the rope liberated simnltaneouslyyin the mannersubstantially as shown and described.

T. H. ARNOLD.

Witnesses:

DANIEL RIDER, M. A. GATES.

